We look at the division of 321505 by 20 
Our goal is to divide 321505 by 20.

On to step 1:
3 divided by 20 is 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 20

Step 2:
When dividing 32 by 20, we get 1 with a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 20 away from 32, we end up with 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 20

Going ahead to step 3:
The number 20 fits into 121 6 times, leaving a remainder of 1.
The next digit of our result is 6. 
Result so far: 16.0
Deduct 120 from 121 and we're left with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 20

Advancing to step 4:
15 divided by 20 is 0 with a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 160.0
Deduct 0 from 15 and we're left with 15.
Append the next digit (0) from the dividend to 15 and continue with: 150 / 20

Moving on to step 5:
20 goes into 150 7 times with a remainder of 10.
Use 7 as the next digit of our solution. 
Result so far: 1607.0
If we take 140 away from 150, we end up with 10.
Fetch the next digit (5) from the dividend, attach it to 10 and continue: 105 / 20

On to step 6:
20 goes into 105 5 times with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 16075.0
If we subtract 100 from 105, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
If we divide 50 by 20, we get 2 and a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 16075.2
The remainder is 10 after subtracting 40 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
100 divided by 20 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 16075.25
Deduct 100 from 100 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 16075.25
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 16075.25
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 16075.25 and a remainder of 0.0.